Find the cardinal number of the indicated set. Use the cardinal number formula.
-If $n ( A ) = 20 , n ( A \cup B ) = 58$, and $n ( A \cap B ) = 16$, find $n ( B )$.
A) 53
B) 38
C) 55
D) 54

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The Answer of Find the cardinal number of the indicated set. Use the cardinal number formula.
-If $n ( A ) = 20 , n ( A \cup B ) = 58$, and $n ( A \cap B ) = 16$, find $n ( B )$.
A) 53
B) 38
C) 55
D) 54

Find the Cardinal Number of the Indicated Set n(A)=20,n(A∪B)=58n ( A ) = 20 , n ( A \cup B ) = 58n(A)=20,n(A∪B)=58

Find the Cardinal Number of the Indicated Set $n ( A ) = 20 , n ( A \cup B ) = 58$